If you didn’t see them sail in, go down to our north- or northeast-facing waterfront late this afternoon and you can see them sail out: First day of the regular weekly cruise-ship visits. Every Saturday starting today, it’s Seattle-based Holland America Line’s Oosterdam (left) and Princess Cruises’ Golden Princess at Terminal 30, Norwegian Cruise Line’s Norwegian Star at Pier 66. Within two weeks, the rest of the “fleet” will be here too — two ships on Fridays and three on Sundays (full schedule here).